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I have problem with my paccar engine when start engine show…

Customer Question
Hi I have problem...

Hi I have problem with my paccar engine when start engine show me engine defeated but when engine is off and snitch on no show any

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

Kenworth t700 2013 paccar engine 485 HP

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

Yes replace egr delta pressure

Mechanic's Assistant: Anything else you want the Truck Mechanic to know before I connect you?

I think no

Submitted: 1 year ago.Category: Medium and Heavy Trucks
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Answered in 6 minutes by:
11/22/2020
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago
roybelding
roybelding, Shop Foreman Freightliner trucks
Category: Medium and Heavy Trucks
Satisfied Customers: 12,915
Experience: Shop Froeman for Freightliner Trucks
Verified

Hello, my name is ***** ***** sorry to see you are having issues. Give me a couple of minutes to review your issue and I will assist you

Roy

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Customer reply replied 1 year ago
Ok
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago

Good morning

Can you give me the codes that are set?

I assume you mean derated for the engine.

Roy

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Customer reply replied 1 year ago
No codes only show engine derated when star my engine
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago

OK, If it is in derate, there is a code as the emission system has derated the system.

Did you try a regen?

Roy

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Customer reply replied 1 year ago
i make regen
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago

Did it complete?

Do you have the factory program to read and monitor the system?

Roy

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Customer reply replied 1 year ago
complete
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago

How long did it take for the regen?

Roy

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Customer reply replied 1 year ago
35 40 minutes
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago

OK, if it did not come out of derate then there is an issue.

You will need someone with the factory program to check the system for active and inactive codes and see if the ECM needs updated calibration.

Roy

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Customer reply replied 1 year ago
Im owner operator and I have scaner marcó i try but no see option for disable engine deratedMatco scanner sorry
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago

There is no option for that in any scan tool.

Once the fault is determined, repairs made and a regen to verify, it will come out of derate. If it does not, the repair was unsuccessful.

Roy

OK, I asked you if it had a code and you said no. There is a code on your screen. Of you click on code assist, what does it say?

Roy

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Customer reply replied 1 year ago
Ok i start regen i cant text you when finish
Technician: roybelding, Shop Foreman Freightliner trucks replied 1 year ago

Code information

P1495
Code number
P1495

Fault code description
Engine protection system - Power derate active
Fault code information
1 trip, Check Engine lamp 3 drive cycle recovery Readiness group – None Freeze frame type –Engine protection
Description of component(s)
Not available/required for this code
Location of component(s)
Not available/required for this code
Diagnostic condition
Not available/required for this code
Set condition of fault code
This DTC is activated when DTC 1496 has been active for more than 10 hours of engine operation.
Reset condition of fault code
Perform the 'EGR derate disable' procedure with DAVIE to clear the DTC.
Electrical diagram(s)
Not available/required for this code
Technical data
Not available/required for this code
Possible causes
This fault code is set by fault code P1496 (P1496 was active for 10 hours)

Additional information
 This DTC activates an engine torque derate.
 Do not troubleshoot this DTC since it originates from another active DTC.

Diagnostic Step-by-Step
Step 1. Investigate Related Trouble Codes
Before troubleshooting this code, take notice of any other active or inactive trouble codes. One or multiple other codes could have been the cause for this code.
Step 1.A Investigate related trouble codes
This cascading diagnostic trouble code is activated by the presence of one or more other related trouble codes.
Action
4. Use DAVIE Diagnostics to perform a Quick Check for current trouble codes.

P3978 = Heater element DEF inlet pipe - Short circuit to supply on ECU (D374) pin (A04).

This is the code that caused the p1495 code.

I hope this helps you.

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roybelding, Shop Foreman Freightliner trucks
Category: Medium and Heavy Trucks
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